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      Rice bran supplementation during nutritional recovery period of malnourished rats improves colon development Translated title: El suplemento con salvado de arroz durante el periodo de recuperación nutricional de ratas malnutridas mejora con el desarrollo del colon

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          Abstract

          Objective: To investigate the colon's development in rats subjected to protein energy malnutrition followed bysupplementation with rice bran. Materials and methods: Weaned Wistar male rats (21 days old), weight (40-50 g) were divided into two groups: diet with 17% protein (C; control group) or an aproteic diet (A; aproteic group), for 12 days. After this, 50% of the rats from each group were sacrificed. The remaining rats were further distributed in the three groups for a recovery (21 days): control (C) continued to receive the control diet whereas the aproteic group (A) received either a control diet (AC) or a control diet supplementedwith 5% of rice bran (ARB). Results: The A group showed alterations in the colon and cecum, excreted dry feces mass and fecal nitrogen, compared with C rats. In the proximal colon of A rats, the external muscularis and the width of the colon wall were higher whereas in the distal colon they were lower than C. After the recovery period, the relative cecum mass, colon mass and colon length of the recovered groups (AC and ARB) were higher than in the C group. Dry feces and fecal nitrogen excreted of the rats from recovered groups were lower than C group. Colon length of the AC group was lower than in the C group. Only the crypt's depthfrom ARB group was higher than in the C group. Conclusion: Control diet supplemented with 5% rice bran, reestablished the large intestine of aproteic rats. The recovery in the ARB group was even better than in the AC rats.

          Translated abstract

          Objetivo: investigar el desarrollo del colon en ratas sometidas a malnutrición proteico-calórica seguida de complementación con salvado de arroz. Material y métodos: se emplearon ratas Wistar macho destetadas (de 21 días de edad), peso (40-50 g) que se dividieron en dos grupos: dieta con 17% de proteínas (C, grupo control) y dieta aproteica (A, grupo aproteico), durante 12 días. Tras ello, se sacrificó al 50% de las ratas de cada grupo. A las ratas restantes se las dividió en tres grupos de recuperación (21 días): grupo control (C) que continuó recibiendo la dieta control mientras que el grupo aproteico (A) recibía o bien una dieta control (AC) o una dieta complementada con salvado de arroz al 5% (ARB). Resultados: El grupo A mostró alteraciones en el colon y el ciego, excretaba heces secas y nitrógeno fecal, en comparación con las ratas C. En el colon proximal de las ratas A, la capa muscular externa y el grosor de la pared del colon estaba aumentados mientras que en el colon distal estaban disminuidos con respecto a C. Tras el periodo de recuperación, la masa relativa del ciego, la masa del colon y la longitud del colon de los grupos recuperados (AC y ARB) eran mayores que en el grupo C. Las heces secas y el nitrógeno fecal excretados por las ratas de los grupos con recuperación eran menores que los del grupo C. La longitud del colon del grupo AC era menor que la del grupo C. Tan sólo la profundidad de las criptas en el grupo ARB era mayor que la del grupo C. Conclusión: Una dieta control complementada con salvado de arroz al 5% restableció el intestino grueso de las ratas aproteicas. La recuperación en el grupo ABR fue incluso mejor que en las ratas AC.

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          Dietary fiber and energy regulation.

          Dietary fiber has many functions in diet, one of which may be to aid in energy intake control and reduced risk for development of obesity. The role of dietary fiber in energy intake regulation and obesity development is related to its unique physical and chemical properties that aid in early signals of satiation and enhanced or prolonged signals of satiety. Early signals of satiation may be induced through cephalic- and gastric-phase responses related to the bulking effects of dietary fiber on energy density and palatability, whereas the viscosity-producing effects of certain fibers may enhance satiety through intestinal-phase events related to modified gastrointestinal function and subsequent delay in fat absorption. The goal of this paper is to provide a brief overview of the role of dietary fiber in energy intake regulation, highlighting the relationship between fiber properties and physiologic action.
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            Official methods of analysis

            P. CUNNIF (1995)
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              AIN-93 purified diets for laboratory rodents: final report of the American Institute of Nutrition Ad Hoc writing committee on the reformulation of the AIN-76A rodent diet

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                nh
                Nutrición Hospitalaria
                Nutr. Hosp.
                Grupo Arán (Madrid, Madrid, Spain )
                0212-1611
                1699-5198
                December 2007
                : 22
                : 6
                : 648-653
                Affiliations
                [02] orgnameUniversidade Federal de Mato Grosso orgdiv1Departamento de Química
                [04] São Paulo SP orgnameUniversidade Federal de São Paulo orgdiv1Departamento de Fisiologia orgdiv2Divisão de Neurofisiologia e Fisiologia da Nutrição Brasil
                [01] orgnameUniversidade Federal de Mato Grosso orgdiv1Departamento de Alimentos e Nutrição
                [03] Cuiabá MT orgnameUniversidade Federal de Mato Grosso orgdiv1Departamento de Cirurgia Brazil
                Article
                S0212-16112007000800003
                0df4c211-8d8c-4e78-8d0f-03f319efa124

                This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.

                History
                : 15 May 2007
                : 28 February 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 27, Pages: 6
                Product

                SciELO Spain


                Colon,Morfología,Malnutrición,Recuperación,Salvado de arroz,Morphology,Malnutrition,Recovery,Rice bran

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